Cyclometalation of lanthanum(iii) based MOF for catalytic hydrogenation of carbon dioxide to formate
Journal article, 2020

The hydrogenation of carbon dioxide (CO2) to formic acid is of great importance due to its useful properties in the chemical industry. In this work, we have prepared a novel metal-organic framework (MOF), JMS-1, using bipyridyl dicarboxylate linkers, with molecular formula [La2(bpdc)3(DMF)3]n. Network analysis of JMS-1 revealed a new 7-connected topology (zaz). The MOF backbone of the activated phase (JMS-1a) was functionalized by cyclometalation using [RuCl2(p-cymene)]2 to produce Ru(ii)@JMS-1a. Both JMS-1a and Ru(ii)@JMS-1a were able to convert CO2 in the presence of hydrogen to formate. Ru(ii)@JMS-1a displayed outstanding conversion evidenced by a yield of 98% of formate under optimized conditions of total pressure 50 bar (CO2/H2 = 1 : 4, temperature 110 °C, time 24 h, 5 mmol KOH, 8 mL ethanol). This work is significant in providing new strategies of incorporating active catalytic centres in MOFs for efficient and selective conversion of CO2 to formate.

Potassium hydroxide

Carbon dioxide

Lanthanum compounds



Chemical industry



Piwai Tshuma

University of Johannesburg

Midlands State University

B. C. E. Makhubela

University of Johannesburg

Lars Öhrström

Chalmers, Chemistry and Chemical Engineering, Chemistry and Biochemistry

S. A. Bourne

University of Cape Town

Nabanita Chatterjee

University of Cape Town

Isaac N. Beas

Botswana Institute for Technology Research and Innovation

J. Darkwa

Botswana Institute for Technology Research and Innovation

University of Johannesburg

G. Mehlana

Midlands State University

RSC Advances

20462069 (eISSN)

Vol. 10 6 3593-3605

Subject Categories

Chemical Process Engineering

Other Chemical Engineering

Organic Chemistry



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Latest update

3/5/2021 3